Improvement in device foe converting rotary into reciprocating motion



EATON WALKER, OF DUNDEE, ILLINOIS.

Letters Patent No.l75,495, dated March 10, 1868.

- yIMPROVENE'ENT IN DEVIOE FOR GONVEBTING ROTARY INTO REGIPBOGATING MOTION dige tdphale nient in it tipa Entert guieut mit mating @mit of its arme.

TO vALL WHOM IT MA17 OONCERN:

Beit known that I, EATON WALKER, of Dundee, in the county of Kane, and State of Illinois, have invented new and useful Mode of' Converting Rotary into Reciprocating Motion; and I do hereby declare that the following is `a full and exact description thereof, reference being had to Vthe accompanying drawing, making part of this specification, in which-s- Figure 1 represents the elevation of wheel and cams and a section of short axle, and

Figure 2 represents a perspective view of the device.

The nature' of my invention consists in converting rotary into rapid reciprocating motion by means of two wheels provided with segmental cams or cogs, the sides of said cams intersecting each other at sharp points,

and a short axle, revolving on a pivot, and provided at the ends with 'rollers, said axle being p'ivoted to and placed on' a frame, and between said wheels, in such a manner that when one end of the axle enters a recess between the two cams of one wheel, its other end comes out to the apex of the intersection of the sides of the two cams of the other'wheel, said Wheels being firmly key'ed to their axle, and in such a manner that the recesses of cams of'one wheel are directly opposite to the coming-out points ofthe camsof the other wheel, as will be hereinafter fully explained. 1

To enable others skilled in the lart to make and use my invention, I will proceed to describe its construc- `tion and operation. v

A is a wheel, provided with cams or cogs B B. These are of segmental shape, the centres ofthe segments lying on the line C C.l There is another wheel, A', constructed in the same way.A Both wheels are firmly keyed to their Aaxle in such a manner that the recesses a a of the wheel A are placed directly opposite to the points ofhintersection, b, of the sides ofthe cams of the wheel A. The cams may be cast with the wheels, or made separately and in sections, and properly secured to the wheels. vA short axle, D, is pivoted to the frame E of the carriage, and can move around bolt or pivot d. `Its: ends are provided with rollers ff to diminish friction, and its length is such as to allow the ends to fully enter thc recesses a a ofthe eams.- A forked lever, e F, is attached to the airle D, the end of which may be connected with an'y part oi' machinery'to which short and rapid reciprocating lmotion is to be communicated. Axle D is pivoted to a cushion, which may slide in grooves of the frame E, and any proper device may be contrived to move back and forth said cushion, so as to pdt' the axle D in gear or out oi' gear.

The accompanying drawing represents the arrangement for moving sickle-bar of' a rcaper, but the same can be applied to many other machines, as, for instance, sieves in separators, a gig-saw, dtc., &c. m

The operation consists in this, that when the wheels revolve, the ends of the axle D are forced in turn into recesses of the cams, or are ejected out to the points of the' intersection, and, as the ends of the axle D make rapid reciprocating motion around pivot d, the end of the forked lever F produces the same motion.

What I claim as my invention,`and desire to secure by Letters Patent, is I The combination of the wheels A, .provided with the cams a, the oscillating-lover D, provided with the friction-rollers j' and the arm F, allccnstructcd and arranged to operate substantially as described.

EATON WALKER.

Witnesses:

J. B. TURcHiN, L. I-I. LANE. 

